By how much? :| I don't think I can improve in English though. What I had in mind was to lift my performance in economics and chemistry x_x but I will improve English if I have to :/
School rank: around 20
Eng Adv: 138/155
Maths 3U: 5/70
Maths 4U: 9/24
Economics: 38/44
Chemistry: 34/48
Crap ranks, I know but thanks to those who do estimate.